TI developed using digital power LED driver evaluation board, equipped with DSP microcontroller Piccolo"

TI (TI) listed the use of digital controlled power supply driver led group evaluation board "DC/DC LED DevELoper" s Kit". The feedback circuit of DC-DC converter (Feedback Loop) control using the DSP microcontroller TMS320C2000 (Piccolo)". The DC-DC converter can drive up to 8 LED groups. The utility model is mainly used for the design purposes of LED backlight, street lamps and building lighting.

The input voltage of DC-DC converter is 12 ~ 48V. Circuit topology for the SEPIC (single ended primary inductor converter), so it can also be based on the driving voltage of the LED group to support the step-up or step-down. Equipped with 4 LED drive circuit, each can drive 2 LED groups. Maximum power supply of 30W for each LED group.

Equipped with the DSP microcontroller "Piccolo" for 32bit products, the clock frequency is 60MHz. Equipped with 12bit, 4.6M sample / second A-D conversion circuit, 14 PWM signal output function and 128KB flash. Because it is equipped with a DSP microcontroller, it can digitally adjust the tone and tone, or support wire communication and fault detection and other functions. In addition, for programming and debugging operations, the board is equipped with a JTAG emulator XDS1000".

Price of $379. In addition to the evaluation board, but also includes the board of the Gerber file, circuit diagram, parts list, etc.. In addition, there are open source software "controlSUITE", integrated DC-DC converter feedback circuit control and LED group driver software. TI said, because of the preparation of the LED driver circuit required hardware and software development, so the user can directly start the design".